21638331

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 96

約数和(自身を含む): 41513472

約数和(自身を除く): 19875141

約数列:

[1, 3, 9, 11, 13, 17, 23, 33, 39, 43, 51, 69, 99, 117, 129, 143, 153, 187, 207, 221, 253, 299, 387, 391, 429, 473, 559, 561, 663, 731, 759, 897, 989, 1173, 1287, 1419, 1677, 1683, 1989, 2193, 2277, 2431, 2691, 2967, 3289, 3519, 4257, 4301, 5031, 5083, 6149, 6579, 7293, 8041, 8901, 9503, 9867, 10879, 12857, 12903, 15249, 16813, 18447, 21879, 24123, 28509, 29601, 32637, 38571, 38709, 45747, 50439, 55341, 55913, 72369, 85527, 97911, 104533, 115713, 141427, 151317, 167739, 184943, 218569, 313599, 424281, 503217, 554829, 655707, 940797, 1272843, 1664487, 1967121, 2404259, 7212777, 21638331]

約数ペア:

[(1, 21638331), (3, 7212777), (9, 2404259), (11, 1967121), (13, 1664487), (17, 1272843), (23, 940797), (33, 655707), (39, 554829), (43, 503217), (51, 424281), (69, 313599), (99, 218569), (117, 184943), (129, 167739), (143, 151317), (153, 141427), (187, 115713), (207, 104533), (221, 97911), (253, 85527), (299, 72369), (387, 55913), (391, 55341), (429, 50439), (473, 45747), (559, 38709), (561, 38571), (663, 32637), (731, 29601), (759, 28509), (897, 24123), (989, 21879), (1173, 18447), (1287, 16813), (1419, 15249), (1677, 12903), (1683, 12857), (1989, 10879), (2193, 9867), (2277, 9503), (2431, 8901), (2691, 8041), (2967, 7293), (3289, 6579), (3519, 6149), (4257, 5083), (4301, 5031)]